Time to rebuild 2 carbs, and 2 petcocks.... pretty easy project. Tip for the unwary: one of my petcocks was on "reserve" when down, "on" when up... WTF? Tip is this: those straws just pull out, swap short for long, an presto! Hucky has (in stock!) teeny tiny, very-fine copper gauze gizmos that serve as a first filter for tank gunk: I put them on, time will tell if they turn into a pita.
Carbs... It is truly amazing how much gunk can be dissolved with one spritz of aerosol carb cleaner...A couple of cans of that stuff, toothbrush, gasket kit, quality time with the wire wheel, and the carbs were looking like new.